All Wales Phase 1 Terrestrial - Vegetation Layer

This is a spatial dataset containing polygon layers showing the boundaries and attributes of vegetation polygons. In 2014 the data were cleaned by NRW's Terrestrial Mapping Specialist, to rectify the line work issues, and the resolution was set to 0.5 m. Polygon attributes include Phase 1 habitat code(s), information on scattered vegetation uniformly distributed across an entire polygon, acid flush present in patches too small to map individually, dominant species codes, habitats in re-vegetated quarry and spoil, whether it was apparent from the OS Landline maps at the time of digitising in 2000-2002 that habitat loss had occurred, name of Upland Vegetation Survey site (or site-complex), whether polygon is upland or lowland, polygon area. The original field surveys were carried out as part of a national habitat survey programme required to implement conservation at a local level. The all-Wales electronic dataset was created for the generation of national statistics on habitat coverage. The dataset was subsequently imported into a GIS to enable its disaggregation into various different geographical regions within Wales. About 30 percent of upland polygons are mixed habitat with no information on habitat proportions. A voronoi version of the vegetation layer has been created to help address this (see metadata for All Wales Phase 1 Terrestrial - Vegetation Layer voronoi - GIS dataset).

Dynodydd: NRW_DS100196

Teitl Amgen

Phase1 Vegetation.LYR
Cam 1 Daearol Cymru Gyfan - llystyfiant
Ph1 Terr All Wales - Veg

Laith Metadata: English

Datganiad: The Field survey spanned from 1979 to 1999. Closely co-ordinated teams of surveyors carried out field recording of habitats onto 1:10,000 scale maps (rarely 1:25,000 during the upland stage). The minimum size of habitat patch recorded lies predominantly within the range 0.1 - 0.25 ha, although smaller areas were mapped in the lowlands. The survey methods employed during the initial upland stage are given in more detail in a WFU report (Day, A. (1989) Upland Vegetation Survey 1979-1989 Background Methodology and Summary of Data Collected. NCC, Bangor). Methods for the lowland survey followed the Handbook for Phase 1 Habitat Survey with some minor modifications adopted for use in Wales (Howe E.A. and Blackstock T.H. (1991) Supplementary Notes for Phase I Survey in Wales. CCW, Bangor). All field mapping was carried out by trained and closely co-ordinated teams of surveyors. A study of survey reliability was conducted during the lowland phase (Kerry, Rimes, Smith, Williams. 1994. An Assessment of Errors in Phase I Habitat Survey in Wales. Bangor: Countryside Council for Wales, Report No. 94/4/1). It showed the field mapping to be 83% repeatable (Stevens, Blackstock, Howe, Stevens. 2004. Repeatability of Phase 1 habitat survey. J. Environ. Manage. 73, 53-59).The electronic data have undergone a series of checks for accuracy both by the contractor and subsequently within CCW.

Dyddiad cyfeirnod y set ddata (Cyhoeddiad): 2014-06-01

Ystod amser

Dyddiad cychwyn: 1979-01-01

Dyddiad gorffen: 2014-06-01

Categori pwnc

Environment
Farming

Perchennog

Natural Resources Wales (NRW)

Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales

http://naturalresources.wales/?lang=en

Cychwynnwr

Countryside Council for Wales (CCW)

Countryside Council for Wales, Maes y Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW

http://naturalresourceswales.gov.uk/splash?orig=/

Rhychwant

Hyd: Wales (WLS)

Map representing the geographic extent of the dataset

Fformat - Math a Disgrifiad

Geographic Information System ()

Math

ESRI Feature Class

Ansawdd Data

Cwmpas Ansawdd: Dataset

Cydymffurfiad: Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services
Eglurhad
Gradd: false

Datganiad: The Field survey spanned from 1979 to 1999. Closely co-ordinated teams of surveyors carried out field recording of habitats onto 1:10,000 scale maps (rarely 1:25,000 during the upland stage). The minimum size of habitat patch recorded lies predominantly within the range 0.1 - 0.25 ha, although smaller areas were mapped in the lowlands. The survey methods employed during the initial upland stage are given in more detail in a WFU report (Day, A. (1989) Upland Vegetation Survey 1979-1989 Background Methodology and Summary of Data Collected. NCC, Bangor). Methods for the lowland survey followed the Handbook for Phase 1 Habitat Survey with some minor modifications adopted for use in Wales (Howe E.A. and Blackstock T.H. (1991) Supplementary Notes for Phase I Survey in Wales. CCW, Bangor). All field mapping was carried out by trained and closely co-ordinated teams of surveyors. A study of survey reliability was conducted during the lowland phase (Kerry, Rimes, Smith, Williams. 1994. An Assessment of Errors in Phase I Habitat Survey in Wales. Bangor: Countryside Council for Wales, Report No. 94/4/1). It showed the field mapping to be 83% repeatable (Stevens, Blackstock, Howe, Stevens. 2004. Repeatability of Phase 1 habitat survey. J. Environ. Manage. 73, 53-59).The electronic data have undergone a series of checks for accuracy both by the contractor and subsequently within CCW.

Allweddair

GEMET - INSPIRE themes, version 1.0

Habitats and biotopes

Math: Theme

Dyfyniad

Dyddiad (Cyhoeddiad): 2008-06-01

Cod: geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme

Allweddair

NRW Thesaurus

geographical information systems (GIS)
vegetation surveys (vegetation monitoring)(see also biologicalsurveys)
lowlands
uplands

Math: Theme

Dyfyniad

Dyddiad (Cyhoeddiad): 2023-12-31

Cod: geonetwork.thesaurus.local.theme.converted_nrw-keywords

Cod: British National Grid (EPSG::27700)

Gwybodaeth Cynnwys

Proffil CNC

Elfennau CNC

Teitlau cysylltiedig CNC: Upland vegetation survey 1979-1989 : background, methodology and summary of data collected

Teitlau cysylltiedig CNC: Supplementary notes for phase 1 survey in Wales

Teitlau cysylltiedig CNC: An assessment of errors in Phase I habitat survey in Wales. Confidential

Cyfyngiadau

Cyfyngiadau ar Fynediad a Defnydd Cyhoeddus

Math o Gyfyngiad: Other restrictions

Cyfarwyddeb Cyfyngiadau Mynediad

Cyfyngiadau: no limitations

Testun cyfyngiadau mynediad

Cyfyngiadau eraill: There are no access restrictions on this data. NRW may release, publish or disseminate it freely.

Defnyddiwch gyfyngiadau

Cyfyngiadau Defnyddio: Other restrictions

Cyfyngiadau eraill: © CNC/NRW All rights Reserved. Contains Ordnance Survey Data. Ordnance Survey Licence number AC0000849444. Crown Copyright and Database Right Data may be re-used under the terms of the Open Government Licence providing it is done so, acknowledging both the source and copyright of the owners. It is the recipient's responsibility to ensure the data is fit for the intended purpose.

Metadata

Dynodydd Ffeil: 4f4c4942-4343-5764-6473-313030313936 XML

Laith Metadata: English

Dynodydd Rhiant: Terrestrial Phase 1 Habitat Survey
NRW_DS24715

Math o adnodd: Dataset

Dyddiad Metadata: 2024-05-31T09:32:10.085Z

Enw Safonol Metadata: NRW

Fersiwn Metadata: 1.0

Pwynt Cyswllt

Natural Resources Wales (NRW)

Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales

http://naturalresources.wales/?lang=en

Corff Cyhoeddi

Mynediad i'r Porth

Mynediad llawn i'r porth a'r metadata.

All Wales Phase 1 Terrestrial - Vegetation Layer

Dull adnabod

Ystod amser

Rhychwant

Rhychwant

Dosbarthiad

Ansawdd

Ansawdd Data

Allweddeiriau

Allweddair

Dyfyniad

Allweddair

Dyfyniad

System Cyfeirio Gofodol

Cynnwys

Gwybodaeth Cynnwys

Proffil CNC

Elfennau CNC

Cyfyngiadau

Cyfyngiadau

Cyfyngiadau ar Fynediad a Defnydd Cyhoeddus

Cyfarwyddeb Cyfyngiadau Mynediad

Testun cyfyngiadau mynediad

Defnyddiwch gyfyngiadau

Metadata

Metadata

Corff Cyhoeddi